Abstract：
:Unlike light torrefaction at 200 °C (B200), the mild (250 °C) and severe (300 °C) torrefaction pretreatments (B250 and B300) significantly increased the calorific value, reduced the oxygen content and improved the surface morphology for bamboo residues (BR). The main oxygen-removing carriers of BR during torrefaction were CO2 and carbonyl compounds. Their torrefaction delayed the start and burnout temperatures of the BR combustions, increased CO2 emission and decreased NH3 and NO emissions significantly. The torrefaction reduced their activation energy in zone II (200-350 °C) and led to a transition from a nucleation to a diffusion mechanism. All the combustions in zone III (350-500 °C) were best explained by a reaction order model whose order rose with the elevated torrefaction temperature. Overall, BR appeared to be more suitable for the torrefaction at 250-300 °C. Our results can provide practical insights into how to turn BR into efficient and clean bioenergy.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Hu J,Song Y,Liu J,Evrendilek F,Buyukada M,Yan Y,Li Ldoi
10.1016/j.biortech.2020.122960subject
Has Abstractpub_date
2020-05-01 00:00:00pages
122960eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30229-7journal_volume
304pub_type
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